中国塑料 ›› 2008, Vol. 22 ›› Issue (11): 56-60 .DOI: 10.19491/j.issn.1001-9278.2008.11.013

• 加工与应用 • 上一篇    下一篇

热流道顺序浇注成型移除熔接痕研究

刘 毅,殷素峰,冯 杨,张祖军,阮 锋   

  1. 华南理工大学机械工程学院, 广东 广州 510640
  • 收稿日期:2008-01-01 修回日期:1900-01-01 出版日期:2008-11-26 发布日期:2008-11-26

Research on Using Sequential Injection Molding to Remove Weld Lines

LIU Yi,YIN Su-feng,FENG Yang,ZHANG Zu-jun,RUAN Feng   

  1. College of Mechanical Engineering, South China Univ. of Tech., Guangzhou 510640, China
  • Received:2008-01-01 Revised:1900-01-01 Online:2008-11-26 Published:2008-11-26
  • Contact: LIU Yi

摘要: 为了有效移除注塑制品中的熔接痕,深入分析了熔接痕的形成过程和采用热流道顺序浇注成型移除熔接痕的机理,并使用模流分析软件Moldflow对顺序浇注成型移除熔接痕的过程进行了有限元模拟。模拟分析结果表明,随着阀浇口不同的开闭时机,顺序浇注成型可以有效地控制熔接痕的位置及长度,改善熔接区域的外观和性能,有效避免熔接痕的产生。实验表明,采用顺序浇注成型时制品的熔接痕已基本消除.

关键词: 顺序浇注成型, 熔接痕, 阀浇口, 数值模拟

Abstract: In order to eliminate the weld lines on the plastic injection molded parts,the morphology of weld lines and the mechanism of removing weld lines by using sequential injection molding have been analyzed. Sequential injection molding was simulated based on the FEM model by means of software Moldflow. It showed that the delay time of second valve gate controlled the position and length of the weld-line. By using sequential injection molding, the weld lines on the molded parts were essentially eliminated.

Key words: sequential injection molding, weld line, valve gate, numerical simulation